1) An emergency service wishes to see whether a relationship exists between the outside temperature and the number of emergency calls it receives for a 7-hour period temperature and y = number of calls. 68 74 82 88 93 99 101

A histogram titled "20 Busiest North American Airports" has a horizontal axis labeled "Total Passengers (Millions)" and a vertical axis labeled "Frequency" with values from 0 to 10. The histogram has 8 bars. Each bar is associated with a label and an approximate value as listed below. Frequency 10 O 0 7 02 8 3 30-39.9 20 Busiest North American Airports 40-49.9 50-59.9 Total Passengers (Millions) What is the lowest frequency value? 60-69.9 70-79.9 80-89.9 90-99.9 100-109.9

The table below shows the relationship between the altitude of the atmosphere and corresponding temperature. Altitude (in feet) 25,000 20,000 15,580 12,902 Temperature (in degree Celsius) 10 16 25 30 What inference can be made from the above data?   A.The temperature of the atmosphere decreases with the increase in the altitude. B.The temperature of the atmosphere decreases with the decrease in the altitude. C.The temperature of the atmosphere increases with the increase in the altitude. D.ANo inference can be made from the given data.

A doctor wanted to determine whether there is a relation between a​ male's age and his HDL​ (so-called good) cholesterol. The doctor randomly selected 17 of his patients and determined their HDL cholesterol. The data obtained by the doctor is the in the data table below. Complete questions below.   LOADING... Click the icon to view the data obtained by the doctor. Age, x HDL​ Cholesterol, y ​Age, x HDL​ Cholesterol, y   37 57 38 46   42 52 64 63   45 33 28 55   34 54 49 37   53 35 26 46   50 40 50 38   60 42 47 56   59 38 40 30   24 46       PrintDone ​(a) Determine the​ least-squares regression equation from the sample data.   y=nothingx+nothing ​(Round to three decimal places as​ needed.)   ​(b​) Assuming the residuals are normally​ distributed, test whether a linear relation exists between age and HDL cholesterol levels at the α=0.01 level…